Outdoor lamp



FIG. 1 is a front perspective view of an outdoor lamp showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken line showing of the light bulb sockets in FIG. 1 are for purposes of illustration only and form no pat of the claimed design. 

The ornamental design for an outdoor lamp, as shown and described. 